Encyclopedia of US Gold Coins
Collecting and Investing Strategies for United States Gold Coins
Gold Rush: How to Collect, Invest and Profit With Gold Coins
Gold Coins of the World
A guide Book of Double Eagle Gold Coins: A Complete History and Price Guide (Official Red Books)
The Gold Book: A Guide to Commonly Traded Gold Bullion Coins and Bars
Catalogue of German Coins Gold, silver and minor coins since 1800, with their valuations
Swiss Bank Corporation Gold Coins Catalogue
A Handbook of 20th Century U.S. Gold Coins: 1907-1933